Alert archive / Colorado / Flash Flood Warnings in 2020

Flash Flood Warning 19, NWS Pueblo, CO

July 4, 2020Huerfano County, Colorado

NWS Pueblo, CO issued this flash flood warning at Jul 4, 2020, 3:42 PM MDT for Huerfano County, Colorado. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 4, 2020, 3:42 PM MDT (21:42 UTC)
Expired: Jul 4, 2020, 8:45 PM MDT
In force: 5 hr
Issued by: NWS Pueblo, CO
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

County Huerfano County, CO

The radar

The Pueblo radar (KPUX), 122 km from the middle of the area, began a volume at 21:41 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 9.7 hours before the alert went out and 296 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2197 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 48 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

158 
WGUS55 KPUB 042142
FFWPUB
COC055-050045-
/O.NEW.KPUB.FF.W.0019.200704T2142Z-200705T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
342 PM MDT Sat Jul 4 2020

The National Weather Service in Pueblo has issued a

* Flash Flood Warning for...
  West central Huerfano County in southeastern Colorado...

* Until 645 PM MDT.

* At 339 PM MDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Around one half inch of rain has
  already fallen. Flash flooding is ongoing or expected to begin
  shortly.

  HAZARD...Life threatening flash flooding. Heavy rain producing 
           flash flooding.

  SOURCE...Radar indicated.

  IMPACT...Life threatening flash flooding of creeks and streams, 
           urban areas, highways, streets and underpasses.

* Some locations that may experience flooding include...
  Spring Burn Scar north of Highway 160. The heaviest rain was 
  falling on the north side of the Spring Burn scar and was moving 
  southeast at 15 mph.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3765 10497 3757 10496 3758 10513 3762 10517
      3765 10526 3770 10526 3770 10509

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.50-1 INCHES IN 1 HOUR

$$

Hodanish

4 follow-up statements

369 
WGUS75 KPUB 042210
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
410 PM MDT Sat Jul 4 2020

COC055-050045-
/O.CON.KPUB.FF.W.0019.000000T0000Z-200705T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Huerfano CO-
410 PM MDT Sat Jul 4 2020

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM MDT FOR
WEST CENTRAL HUERFANO COUNTY...

At 406 PM MDT, Doppler radar indicated thunderstorms producing 
moderate rain across the northern section of the Spring Burn scar. 
one half to 3/4 on a inch of rain has fallen. Flash flooding is 
likely ongoing or expected to begin shortly. Additional heavy rain 
will be possible over the Spring burn scar through 5 pm.

HAZARD...Life threatening flash flooding. Heavy rain producing flash 
         flooding.

SOURCE...Radar indicated.

IMPACT...Life threatening flash flooding of creeks and streams, 
         urban areas, highways, streets and underpasses.

Some locations that will experience flooding include...
Spring Burn Scar north of Highway 160.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3765 10497 3757 10496 3758 10513 3762 10517
      3765 10526 3770 10526 3770 10509

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.50-1 INCHES IN 1 HOUR

$$

Hodanish

600 
WGUS75 KPUB 042256
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
456 PM MDT Sat Jul 4 2020

COC055-050045-
/O.CON.KPUB.FF.W.0019.000000T0000Z-200705T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Huerfano CO-
456 PM MDT Sat Jul 4 2020

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM MDT FOR
WEST CENTRAL HUERFANO COUNTY...

At 452 PM MDT, Doppler radar indicated thunderstorms producing 
moderate to locally heavy rain across the northern sections of the 
Spring burn scar. An additional 1/4 inch to 1/2 inch of rain will be 
possible, mainly along and north of highway 160. 

Flash flooding is likely ongoing over parts of the northern sections 
of the Spring burn scar.

HAZARD...Life threatening flash flooding. Heavy rain producing flash 
         flooding.

SOURCE...Radar indicated.

IMPACT...Life threatening flash flooding of creeks and streams, 
         urban areas, highways, streets and underpasses.

Some locations that will experience flooding include...
Spring Burn Scar north of Highway 160.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3765 10497 3757 10496 3758 10513 3762 10517
      3765 10526 3770 10526 3770 10509

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.30-0.50 INCHES IN 1 HOUR

$$

Hodanish

042 
WGUS55 KPUB 050035
FFWPUB
COC055-050245-
/O.EXT.KPUB.FF.W.0019.000000T0000Z-200705T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
635 PM MDT Sat Jul 4 2020

The National Weather Service in Pueblo has extended the

* Flash Flood Warning for...
  West central Huerfano County in southeastern Colorado...

* Until 845 PM MDT.

* At 631 PM MDT, Doppler radar indicated that the heavy rain has 
  ended over the northern sections of the Spring Burn scar. However 
  one to two inches of rain has fallen over this region and flash 
  flooding is likely to continue through 8 pm this evening. 

  HAZARD...Life threatening flash flooding. Heavy rain producing 
           flash flooding.

  SOURCE...Radar indicated.

  IMPACT...Life threatening flash flooding of creeks and streams, 
           urban areas, highways, streets and underpasses.

* Some locations that will experience flooding include...
  Spring Burn Scar north of Highway 160.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3765 10497 3757 10496 3758 10513 3762 10517
      3765 10526 3770 10526 3770 10509

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.30-0.50 INCHES IN 1 HOUR

$$

Hodanish

611 
WGUS75 KPUB 050241
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
841 PM MDT Sat Jul 4 2020

COC055-050251-
/O.EXP.KPUB.FF.W.0019.000000T0000Z-200705T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Huerfano CO-
841 PM MDT Sat Jul 4 2020

...THE FLASH FLOOD WARNING FOR WEST CENTRAL HUERFANO COUNTY WILL
EXPIRE AT 845 PM MDT...

Flood waters have receded. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.

LAT...LON 3765 10497 3757 10496 3758 10513 3762 10517
      3765 10526 3770 10526 3770 10509

$$

Hodanish

The office that day

Everything else NWS Pueblo, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 3, 6:54 PM MDT	Special Weather Statement	PUB	Prowers	36 min
Jul 4, 1:20 PM MDT	Special Weather Statement	PUB	Chaffee	40 min
Jul 4, 2:30 PM MDT	Special Weather Statement	PUB	Fremont	30 min
Jul 4, 2:59 PM MDT	Special Weather Statement	PUB	Custer	31 min
Jul 4, 3:03 PM MDT	Special Weather Statement	PUB	Teller	27 min
Jul 4, 3:08 PM MDT	Special Weather Statement	PUB	Las Animas	37 min
Jul 4, 3:39 PM MDT	Special Weather Statement	PUB	Pueblo	36 min
Jul 4, 3:46 PM MDT	Special Weather Statement	PUB	El Paso	29 min
Jul 4, 3:54 PM MDT	Severe Thunderstorm Warning	PUB	Huerfano, Las Animas, Otero, Pueblo	51 min
Jul 4, 4:42 PM MDT	Severe Thunderstorm Warning	PUB	Crowley, Otero, Pueblo	48 min
Jul 4, 5:06 PM MDT	Special Weather Statement	PUB	Crowley	39 min
Jul 4, 5:38 PM MDT	Flash Flood Warning	PUB	Huerfano	100 min
Jul 4, 5:46 PM MDT	Special Weather Statement	PUB	Crowley	29 min
Jul 4, 5:49 PM MDT	Special Weather Statement	PUB	Crowley	26 min

Nearby

Flash Flood Warnings in Colorado, 2020 Every flash flood warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.